STUDY: Just 1 or 2 workouts a week can be enough to stay in shape.

Distractions creep in—a long meeting keeps you from the pile of work you’ve barely dented, a food- and booze-filled vacation saps your return-to-real-life motivation—and before you know it, it’s the end of the week and you’ve literally done squat…as in, not a single squat.